Method of making spray-nozzles.



S. W. GRAMER & W. B. HODGE.

METHOD OF MAKING SPRAY NOZZLE-S.

APPLICATION FILED 00126, 1910.

Patented June 4, 1912.

Ema/whom STUART w. GBAMER- AND WILLIAM B. HODGE, F CHARLOTTE, NORTH CAROLINA;

SAID HODGE ASSIGNOR TO SAID CRAMER.

METHOD OF MAKING SPRAY-NOZZLES.

Specification of Letters Patent.

Patented J une4, 1912.

Application filed October 26, 1910. Serial No. 589,199.

- To all tvhom it may concemr Be it known that we, ST ART IV. CRAMER and WILLIAM B. Honors, citizens of the United States, residing at Charlotte, in the county of Mecklenburg and State of North Carolina, have invented certain new and useful Improvements in Methods of Making Spray-Nozzles; and we do hereby declare the following to be a full, clear, and exact description of the inyention, such as Wlll enable others skilled in the art to which it appertains to make and use the same.

Our invention relates primarily to humidifiers for moistening the air in mills, factories and other buildings and has especial reference-to water spray-nozzles. The particular form of spray-nozzle to which our invention refers, and to which it is applicable, is that consisting of-a bodymember arranged for attaching to a supply pipe, a jet discharge orifice either incorporated directly into the body part or into a detachable member adjustably thereto, and a pillar upon which is supported a jet breaking up pin, opposite to and concentrically arranged with reference to the discharge orifice.

Theobject of the invention is to secure great accuracy in centering the orifice in line with its breaking up pin, as well as increasing the durability of the device, and the invention consists in certain improvements, which will be fully disclosed in the following specification and claims.

In. the accompanying drawings, which form part of this specification :'Figure 1 represents a sectional view of the nozzle with the pin and bushing arranged for casting. Fig. 2 is a like View of a completed nozzle ready for use. And Fig. 3 represents a longitudinal section of a mold for casting the nozzle.

Reference being'had to the drawings and,

a the designating characters thereon, the nucast of suitable metal as part of the body 6.

meral 1 indicates'the nozzle-frame or yoke,

The frame or yoke supports the pillar 5 in which is inserted a pin 4, opposite and directly under the orifice 7, through which water is discharged. The body is provided with a screw-thread'2, by which it is attached to a pipe, not shown, for conveying water to be sprayed.

In constructing nozzles heretofore, it has been the common practice to attempt to get secured the pin 4, Fig. 2, opposite the opening or orifice 7 by mere mechanical methods.

Owing to the fact that the accurate centerthese are cast in, the inability to hold the pin 4, Fig. 2, perfectly rigid during the contraction of the metal renders it likely to spring one way or the other, and when the casting is finally cool it is not axial with the nozzle orifice. Inprevious types of nozzles, the ,orifices havebeen in the metal of the casting itself. In other words, a hole drilled through the casting to form the orifice at the proper point opposite-the pin. An objectionable-feature of this construction is that the water passing through at high velocity wire draws the sides of the orifice,

this is on account of the fact that the metal used in casting is not uniformly hard and homogeneous. To overcome this grooving action, and to aid in centering the pin, we have arranged the bushing 3, Fig. 1, in connection with the pin 4 to be held each by the other in their respective positions, and the metal of the nozzle body cast around them while they are thus held rigidly. The bushing and the pin become homogeneous with the body'and both are permanently embedded therein. It is advisable to have the pin 4 as shown in Fig. 2 slightly larger in diameter than the orifice of the bushing 3. On this account the pin 4 is made with two diameters, the smaller diameter exactly the same as the inside diameter of the orifice in the bushing, whereas the larger diameter of the pin 4 is of the proper size to break up the stream of water to the best advantage." The bushing and pin are made of tough metal, such as nickel, whose melting point is higher than the melt-ing point I in Fig. 1, which holds it axially centralwith the pin. The casting is then made and finally the end of the pin which extends from the lower end of the bushing is filedoflf, leaving the pro-per space between the lower end of the bushing and the upper end of the pin to get the desired water breaking. effect. Owing to the fact that the pin and the bushing have been held axially while the molten metal was poured around them and allowed to cool, it can be readily seen that these two parts are exactly in line with each other, and after filing off the end of the pin and removing the part in the orifice, the stream of water issuing from the orifice of the bushing 3 will strike the upper end of the pin 4 exactly central and result in a uniform spray of water surrounding pin i.

boss or projection 12 is exteriorly screwthreaded at 13 to form the screw thread in the body 6. s

It is of 'course possible to use pins and bushings of any desired materialso as to resist. corrosion and wear and of any desired ratio between the diameter of the orifice and the diameter of the in.

The spray nozzle orms subject matter of another application for a patent, Serial Number 673,674.

Having thus fully described our invention, what we claim is- 1. The method of forming a spray nozzle which consists in supporting a bushing ha'v: ing a spray orifice and a breaking pin in a predetermined relation to each other, casting a frame around said bushing and pin pin which and then removing the part ofthe which was held in the bushing.

2. The method of forming a spray nozzle 3 which consists insupporting a bushing having a spray orifice and a breakin pin in a predetermined relation to each 'ot 'er, pouring liquid metal around the bushing and pin to e'mbed them permanently in a frame, and then removing. the part ,of the pin which was held in the bushing.

.In' testimony whereof we afiix our signatures, in presence of two witnesses.

STUART w. (DRAM ER.

WILLIAM B. HODGE.

Witnesses: I

'JNO. C. WATSON,

C. F. COLE. 

